Information about approved maintenance organisations Applications for Approved Maintenance Organisations (AMO) Resources and guided steps for initial applications or exemptions related to AMOs under Part 145 of CASR. Interim changes for specialist maintenance (D rating) approvals How we handle specialist maintenance and D3 rating approval applications. Requirements for AMOs under Part 145 Helpful information for organisations that hold, or are applying for, approval under Part 145. Information about certificates of approval Apply for or vary a certificate of approval (COA) under CAR 30 Resources and guided steps to get a CAR 30 certificate of approval to maintain registered aircraft and components not used for scheduled air… Also see Airworthiness Bulletins Find airworthiness bulletins (AWBs) for airframes, avionics, engines and general advice. Airworthiness Directives Find Airworthiness Directives (ADs) for each category. Maintenance engineers Find out how to become an aircraft maintenance engineer and the different types of licences.